Oil feeder for flotation machines



y A. c. DAMAN OIL FEEDER FOR FLOTATION MACHINES Original Filed Jan. 12.1924 ATTORNEY.

Patented May 3, 1927.

ARTHUR C. DLHAN, OE DENVEB, COLORADO.

OIL FEEDER FOR I'LOTATION MACHINES.

Application fled January 12, 1924, Serial No. 685,082. Renewed August15,1925.

This invention relates to oil feeders, more particularly of the typeadapted for use in feeding oils and otherv re-agents to flotationmachines, and similar apparatus requiring a steady andminutely-adjustable flow. of oil, and has for its rincipal object theprovision of a device of this character, in which the amount of oildelivered maybe minutely adjusted, and in which there will be no ,wear

or friction between the oil delivering, or measuring parts.-

In the usual type of oil feeder, in which a scraper removes the oil froma disk or drum, it has been found that when the scraper is set for anylen th of time to scrape from only a portion the disk or drum it becomesso worn at the contacting part that it is useless when it is desired toadjust the scraper to contact with a larger portion of the disk or drum.

In this invention there is no contact whatever between the deliveringtrough and the oil containing parts, so that the objection to the formermachineshas been eliminated.

Another object of the invention is to provide a device of thischaracter, in which the oil in the sump is constantly mixed and a'itated, so that its consistency will always e uniform.

Other objects and advanta es reside in the detail construction of t einvention, which result in simplicity, economy, and efficiency, andwhich will become more apparent from the following description.

In thefollowing detailed description of the invention reference is hadto the accompanying drawing which forms a part hereof. Like numeralsrefer to like parts in all views of the drawing and throughout thedescription;

In the drawing:

Fig; 1 is a side'elevation of the com lete invention in which thelongest part c the drum is shown upward.

Fig. 2 is a partial plan view of the invention, in which the longestpart of the drum is'shown downward.

Fig. 3 is a detail view of an oil lifting cup.

Fig. 4 is a detail section through the free ed e of the drum.

l ,ig. 5 is a detail view of the clamp 19.

l'iet the numeral designate a bearing,

supported on a pedestal 11, which may be secured to any desired base 12.Bearing 10 supports a she-ft 29, which carries at its one the drum 13 isextremity a belt pulley 30, and at its other extremity a hollowcylindrical drum 13.

The free ed e of the drum 13 is cut at an angle to t e axis of the shaft29, as shown on the drawing, and is provided with a ser es of oil cups14, secured thereto by means of clips 15.. The interior surface ofprovided with angularly disposed lifter bars 16. The free edge of thedrum 13 is rolled backward on the inside as shown in Fig. 4 to form aperipheral groove 22. An outward projecting bead 23 is formed around thedrum adjacent the clips 15.

The lower part of the drum 13 extends into an oil pan or sump 17,carried upon the base 12, and having secured to its one end a bracket18, which is provided with a clamp 19, shown in detail in Fig. 5.

A trough is arranged to be clamped.

within the clamp 19, by means of a set screw 21, and projects at anupward an le from the clamp 19, into the interior of t e drum 13.

The operation of the device is as follows: Oil is'placed in the pan 17and the drum 13 is revolved by means of the pulley from any suitablesource of power. As the cups 14 pass beneath the surface of the oil inthe pan 17 they fill with oil which is carried upwardl on the risingside of the drum and deposite at the top into the trough 20.-

The-*oil which adheres to the outer surface of the drum is preventedfrom dripping into the trough 20 by the head 23 which defiects it backinto the pan 17.

The oil which adheres to the inner surface of the drum is prevented fromdripping into the trough 20 b the groove 22 which deflects it back intot e pan 17. I

The lifter bars 16 travel through the oil at an angle and actin thenature of propellers to constantly keep the oil in the pan 17 incirculation thereby keeping it in uniform consistency.

Should it be desired to decrease the amount of oil being .delivered fromthe trough 20, the set screw 21 is loosened and the trou h 20 pulledoutward so as to receive the oil f rom a lesser number of the cups 14.Should it be desired to increase the amount of oil delivered, the trough20 is forced inward to receive the oil'from a reater number of cups. Therange of a just-ment of delivery is from one cup of oil per revolution,to the total number of cups of oil caramount of oil delivered may beincreased' or decreased, one cup at a time.

It is preferred to form the trough 20 in the shape shown in Fig. 5, thatis 'with a dove tail shape in cross section, with flaring sides 24.Tllhe clamp 19 is shaped to grasp the dove tail bottom of the trough 20by means of a movable block 25, which is pressed against the trough 20by the set screw 21.

The drum 13- is -preferably.formed by rolling a triangular piece ofsheet metal upon a circular drum 26, which is secured to the. shaft 29,and clamping it thereon by means of a clamping ring 27 and a bolt 28.

While a specific form of the improvement has been described andillustrated herein, it is desired to be understood that the same may bevaried, within the scope of the appended claims, without departing fromthe spirit of the invention.

Having thus described the invention, what is claimed and desired to besecured by Letters Patent is 1. A liquid delivering mechanism comprisinga series of liquid containers, ar-

ranged to rotate, the plane of said series being disposed at an angle toa perpendicular to the axis of said rotation;-a pan from which saidcontainerswvill carry said liquid and a trough into which saidcontainers will pour said liquid, the extension of said trough into saidseries being adjustable.

2. A liquid delivering mechanism comprising a shaft; a hollow cylinderconcentrically mounted on one extremity of said shaft, the plane of thefree edge of said cylinder being at an angle to a plane perpendicular tothe axis of said shaft; containers mounted along said free edge; a paninto which said cylinder depends; a trough extending within saidcylinder and means for varying the extension of said trough.

3. A liquid delivering mechanism comprising a liquid container; ahollow, horizontal, rotatably-mounted, cylinder extending within saidcontainer, one end of said cylinder being cut at an angle to a planeperpendicular to the axis thereof; cups secured alon said angularly'cutedge; an angularly isposed trough arranged to extend within saidcylinder under the angularly cut ed e thereof, the degree of extensionof said trough within said cylinder being adjustable.

4. A liquid delivering mechanism comprising a liquid container; ahollow, horizontal, rotatably-mounted, cylinder extending within saidcontainer, one end of said .cylinder being cut at an angle to a planeperpendicular to the axis thereof, said cylinder having angularlydisposed bars on its interior to agitate said liquid; cups secured alongsaid angularly cut edge; an angular-1y disposed trough arranged toextend within said cylinder under the angularly cut edge thereof, thedegree of extension of said trough within said cylinder beingadjustable.

5. A liquid delivering mechanism comprising a liquid container; ahollow, horizontal, rotatably-mounted, cylinder extending within saidcontainer, one end of said cylinder being cut at an angle to a planeperpendicular .to the axis thereof, said cylinder having angularlydisposed bars on its interior to agitate said liquid; an obstructionencircling said cylinder adjacent its angularly cut edge to prevent saidliquid from dripping from said edge; cups se- -cured along saidangularly cut edge; an angularly disposed trough arranged to extendwithin said cylinder under the angular-1y cut edge thereof, the degreeof extension of said trough within said cylinder being adjustable.

In testimony whereof, I aflix my signature.

ARTHUR C. DAMAN.

